Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping

The crystallinity of epitaxial graphene (EG) grown on a Hexagonal-SiC substrate is found to be enhanced greatly by capping the substrate with a molybdenum plate (Mo-plate) during vacuum annealing. The crystallinity enhancement of EG layer grown with Mo-plate capping is confirmed by the significant c...

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Autores principales: Jin, Han Byul, Jeon, Youngeun, Jung, Sungchul, Modepalli, Vijayakumar, Kang, Hyun Suk, Lee, Byung Cheol, Ko, Jae-Hyeon, Shin, Hyung-Joon, Yoo, Jung-Woo, Kim, Sung Youb, Kwon, Soon-Yong, Eom, Daejin, Park, Kibog
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5386107/
https://www.ncbi.nlm.nih.gov/pubmed/25905989
http://dx.doi.org/10.1038/srep09615
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author Jin, Han Byul
Jeon, Youngeun
Jung, Sungchul
Modepalli, Vijayakumar
Kang, Hyun Suk
Lee, Byung Cheol
Ko, Jae-Hyeon
Shin, Hyung-Joon
Yoo, Jung-Woo
Kim, Sung Youb
Kwon, Soon-Yong
Eom, Daejin
Park, Kibog
author_facet Jin, Han Byul
Jeon, Youngeun
Jung, Sungchul
Modepalli, Vijayakumar
Kang, Hyun Suk
Lee, Byung Cheol
Ko, Jae-Hyeon
Shin, Hyung-Joon
Yoo, Jung-Woo
Kim, Sung Youb
Kwon, Soon-Yong
Eom, Daejin
Park, Kibog
author_sort Jin, Han Byul
collection PubMed
description The crystallinity of epitaxial graphene (EG) grown on a Hexagonal-SiC substrate is found to be enhanced greatly by capping the substrate with a molybdenum plate (Mo-plate) during vacuum annealing. The crystallinity enhancement of EG layer grown with Mo-plate capping is confirmed by the significant change of measured Raman spectra, compared to the spectra for no capping. Mo-plate capping is considered to induce heat accumulation on SiC surface by thermal radiation mirroring and raise Si partial pressure near surface by confining the sublimated Si atoms between SiC substrate and Mo-plate, which would be the essential contributors of crystallinity enhancement.
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spelling pubmed-53861072017-04-14 Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping Jin, Han Byul Jeon, Youngeun Jung, Sungchul Modepalli, Vijayakumar Kang, Hyun Suk Lee, Byung Cheol Ko, Jae-Hyeon Shin, Hyung-Joon Yoo, Jung-Woo Kim, Sung Youb Kwon, Soon-Yong Eom, Daejin Park, Kibog Sci Rep Article The crystallinity of epitaxial graphene (EG) grown on a Hexagonal-SiC substrate is found to be enhanced greatly by capping the substrate with a molybdenum plate (Mo-plate) during vacuum annealing. The crystallinity enhancement of EG layer grown with Mo-plate capping is confirmed by the significant change of measured Raman spectra, compared to the spectra for no capping. Mo-plate capping is considered to induce heat accumulation on SiC surface by thermal radiation mirroring and raise Si partial pressure near surface by confining the sublimated Si atoms between SiC substrate and Mo-plate, which would be the essential contributors of crystallinity enhancement. Nature Publishing Group 2015-04-24 /pmc/articles/PMC5386107/ /pubmed/25905989 http://dx.doi.org/10.1038/srep09615 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Jin, Han Byul
Jeon, Youngeun
Jung, Sungchul
Modepalli, Vijayakumar
Kang, Hyun Suk
Lee, Byung Cheol
Ko, Jae-Hyeon
Shin, Hyung-Joon
Yoo, Jung-Woo
Kim, Sung Youb
Kwon, Soon-Yong
Eom, Daejin
Park, Kibog
Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping
title Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping
title_full Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping
title_fullStr Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping
title_full_unstemmed Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping
title_short Enhanced Crystallinity of Epitaxial Graphene Grown on Hexagonal SiC Surface with Molybdenum Plate Capping
title_sort enhanced crystallinity of epitaxial graphene grown on hexagonal sic surface with molybdenum plate capping
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5386107/
https://www.ncbi.nlm.nih.gov/pubmed/25905989
http://dx.doi.org/10.1038/srep09615
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